Abstract : A package of computer programs for simulating electrostrictive laser beam trapping is documented. Experimentally a sufficiently powerful laser pulse can focus itself into a long, thin filament by electrostrictively compressing experimental conditions and three discretization parameters. The output is a printed computer movie showing the beam propagation trajectory at selected intervals during the laser pulse, and a graph of peak achieved intensity along the beam axis. The movie may also be plotted. (Author)